It is a good opportunity to get a feel for trekking in Tibet. The two passes en route, Showa-la and Char-la, are not particularly high or difficult and the trail heads are easily accessible from Shigatse. This trek begins at the historic Shalu Monastery and traverses west over a couple of small ranges to Ngor Monastery. From Ngor it is a downhill slog to Nartang Monastery. The route passes through several villages as well as uninhabited dry canyons. It is about a 10 hour walk to Ngor from Shalu, which is best divided into two days and another seven hours from there to Nartang.
Note: The processing time for a Tibet Permit is 20 days. It would be wise to confirm your Tibet tour at least 30 days before travel to ensure adequate time is available to process the Tibet Permit.